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Vulnerabilities / CVE-2026-6653

critical

CVE-2026-6653

libxml2: mingw-libxml2: libxml2: Denial of Service via crafted XML input due to use-after-free

Published Modified CWE 416, 611
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Julia7.0CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Julia (high), Red Hat (medium), AlmaLinux (medium), Amazon (medium), Oracle (medium), Rocky Linux (medium), Ubuntu (medium).

Description

Use After Free in libxml2's xmlParseInternalSubset from GNOME libxml2 version 2.9.11 to 2.11.0 allows a remote attacker to cause a denial-of-service via maliciously crafted XML input with improper entity resolution handling.

Affected packages and fixed versions

SourcePackageFixed in
alma 8libxml2, libxml2-devel, python3-libxml22.9.7-21.el8_10.8
alma 9libxml2, libxml2-devel, python3-libxml22.9.13-14.el9_8.4
amazon linux 2libxml2, libxml2-debuginfo, libxml2-devel and 2 more2.9.1-6.amzn2.5.25
amazon linux 2023libxml2, libxml2-debuginfo, libxml2-debugsource and 4 more2.10.4-1.amzn2023.0.19
debian 11libxml2no fix listed
debian 12libxml2no fix listed
debian 13libxml2no fix listed
debian 14libxml22.14.5+dfsg-0.1
echolibxml2, libxml2-2.11.7, libxml2-2.15.3 and 1 more2.12.7+dfsg+really2.9.14-2.1+deb13u2+e8 and 3 more
julia::Julia Ecosystem Security AdvisoriesXML2_jll2.11.5+0
Oracle Linux 8libxml2, libxml2-devel, python3-libxml22.9.7-21.el8_10.8
Oracle Linux 9libxml2, libxml2-devel, python3-libxml22.9.13-14.el9_8.4
Show all 82 entries from 32 sources
SourcePackageFixed in
alma 8libxml22.9.7-21.el8_10.8
alma 8libxml2-devel2.9.7-21.el8_10.8
alma 8python3-libxml22.9.7-21.el8_10.8
alma 9libxml22.9.13-14.el9_8.4
alma 9libxml2-devel2.9.13-14.el9_8.4
alma 9python3-libxml22.9.13-14.el9_8.4
amazon linux 2libxml22.9.1-6.amzn2.5.25
amazon linux 2libxml2-debuginfo2.9.1-6.amzn2.5.25
amazon linux 2libxml2-devel2.9.1-6.amzn2.5.25
amazon linux 2libxml2-python2.9.1-6.amzn2.5.25
amazon linux 2libxml2-static2.9.1-6.amzn2.5.25
amazon linux 2023libxml22.10.4-1.amzn2023.0.19
amazon linux 2023libxml2-debuginfo2.10.4-1.amzn2023.0.19
amazon linux 2023libxml2-debugsource2.10.4-1.amzn2023.0.19
amazon linux 2023libxml2-devel2.10.4-1.amzn2023.0.19
amazon linux 2023libxml2-static2.10.4-1.amzn2023.0.19
amazon linux 2023python3-libxml22.10.4-1.amzn2023.0.19
amazon linux 2023python3-libxml2-debuginfo2.10.4-1.amzn2023.0.19
debian 11libxml2no fix listed
debian 12libxml2no fix listed
debian 13libxml2no fix listed
debian 14libxml22.14.5+dfsg-0.1
echolibxml22.12.7+dfsg+really2.9.14-2.1+deb13u2+e8
echolibxml2-2.11.72.11.7+e1
echolibxml2-2.15.32.15.3+e1
echolibxml2-2.9.12.9.1+e1
julia::Julia Ecosystem Security AdvisoriesXML2_jll2.11.5+0
Oracle Linux 8libxml22.9.7-21.el8_10.8
Oracle Linux 8libxml2-devel2.9.7-21.el8_10.8
Oracle Linux 8python3-libxml22.9.7-21.el8_10.8
Oracle Linux 9libxml22.9.13-14.el9_8.4
Oracle Linux 9libxml2-devel2.9.13-14.el9_8.4
Oracle Linux 9python3-libxml22.9.13-14.el9_8.4
rapidfort alma 9libxml20:2.9.13-14.el9_8.4
rapidfort alma 9libxml2-devel2.9.13-14.el9_8.4
rapidfort alma 9python3-libxml22.9.13-14.el9_8.4
rapidfort amazon linuxrf-libxml22.10.4-13.rfal
rapidfort amazon linuxrf-libxml2-devel2.10.4-13.rfal
rapidfort amazon linuxrf-libxml2-static2.10.4-13.rfal
rapidfort amazon linuxrf-python3-libxml22.10.4-13.rfal
rapidfort amazon linux 2023libxml20:2.10.4-1.amzn2023.0.19
rapidfort amazon linux 2023libxml2-devel2.10.4-1.amzn2023.0.19
rapidfort amazon linux 2023libxml2-static2.10.4-1.amzn2023.0.19
rapidfort amazon linux 2023python3-libxml22.10.4-1.amzn2023.0.19
rapidfort amazon linux 2023rf-libxml20:2.10.4-1.amzn2023.0.19
rapidfort amazon linux 2023rf-libxml2-devel2.10.4-1.amzn2023.0.19
rapidfort amazon linux 2023rf-libxml2-static2.10.4-1.amzn2023.0.19
rapidfort amazon linux 2023rf-python3-libxml22.10.4-1.amzn2023.0.19
rapidfort debian 12libxml20:2.14.5+dfsg-0.1
rapidfort debian 12rf-libxml20:2.14.5+dfsg-0.1
rapidfort debian 13libxml20:2.14.5+dfsg-0.1
rapidfort debian 13rf-libxml20:2.14.5+dfsg-0.1
rapidfort Oracle Linux 9libxml20:2.9.13-14.el9_8.4
rapidfort Oracle Linux 9libxml2-devel0:2.9.13-14.el9_8.4
rapidfort Oracle Linux 9python3-libxml20:2.9.13-14.el9_8.4
rapidfort rocky 9libxml20:2.9.13-14.el9_8.4
rapidfort rocky 9libxml2-devel0:2.9.13-14.el9_8.4
rapidfort rocky 9python3-libxml20:2.9.13-14.el9_8.4
rapidfort ubuntu 20.04libxml20:2.9.13+dfsg-1ubuntu0.12, 0:2.9.14+dfsg-1.3ubuntu3.8
rapidfort ubuntu 20.04rf-libxml20:2.9.13+dfsg-1ubuntu0.12, 0:2.9.14+dfsg-1.3ubuntu3.8
rapidfort ubuntu 22.04libxml20:2.9.13+dfsg-1ubuntu0.12, 0:2.9.14+dfsg-1.3ubuntu3.8
rapidfort ubuntu 22.04rf-libxml20:2.9.13+dfsg-1ubuntu0.12, 0:2.9.14+dfsg-1.3ubuntu3.8
rapidfort ubuntu 24.04libxml20:2.9.13+dfsg-1ubuntu0.12, 0:2.9.14+dfsg-1.3ubuntu3.8
rapidfort ubuntu 24.04rf-libxml20:2.9.13+dfsg-1ubuntu0.12, 0:2.9.14+dfsg-1.3ubuntu3.8
Red Hatopenshift/ose-rhel-coreos-8no fix listed
Red Hatopenshift/ose-rhel-coreos-9no fix listed
rocky 8libxml22.9.7-21.el8_10.8
rocky 8python3-libxml22.9.7-21.el8_10.8
rocky 9libxml22.9.13-14.el9_8.4
rocky 9python3-libxml22.9.13-14.el9_8.4
seal debianlibxml22.9.14+dfsg-1.3~deb12u4+sp999
seal debianseal-libxml22.9.14+dfsg-1.3~deb12u4+sp999
seal Red Hat 6libxml22.7.6-21.el6_8.1+sp999
seal Red Hat 6seal-libxml22.7.6-21.el6_8.1+sp999
seal Red Hat 7libxml22.9.1-6.el7_9.6+sp999
seal Red Hat 7seal-libxml22.9.1-6.el7_9.6+sp999
seal Red Hat 8libxml22.9.7-18.el8_10.1+sp4
seal Red Hat 8seal-libxml22.9.7-18.el8_10.1+sp4
seal Red Hat 9libxml22.9.13-6.el9_4+sp999
seal Red Hat 9seal-libxml22.9.13-6.el9_4+sp999
ubuntu 22.04libxml22.9.13+dfsg-1ubuntu0.12
ubuntu 24.04libxml22.9.14+dfsg-1.3ubuntu3.8

References

All 18 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.